Overview

Coastal Virginia Offshore Wind (CVOW) is a major offshore wind energy project situated approximately 24 nautical miles off the coast of Virginia Beach, within the Hampton Roads metropolitan area of Virginia, United States. The project is being developed by Dominion Energy and represents the largest offshore wind project currently under development in the U.S. The wind farm covers a lease area of 112,800 acres (456 km2) and is expected to have a total installed capacity of 2.6 gigawatts (GW). This capacity is projected to generate electricity equivalent to the power consumed by 660,000 homes. Dominion Energy expects the total project cost to reach $10.7 billion.

Technical Specifications

The wind farm will consist of 176 fixed-bottom wind turbines manufactured by Siemens Gamesa. Each turbine is of the SG 14-222 DD model, featuring a capacity of 14.6 megawatts (MW) and a rotor diameter of 222 metres (728 ft). The project is currently under construction and is scheduled for commissioning in 2026.

Why it matters

Coastal Virginia Offshore Wind (CVOW) represents a pivotal shift in the scale and structure of renewable energy development in the United States. As the largest offshore wind project currently under development in the U.S., the project establishes a new benchmark for capacity and logistical complexity in the North Atlantic basin. The facility is designed to deliver a total capacity of 2.6 gigawatts (GW), a figure that significantly expands the regional grid’s ability to integrate variable renewable resources. This scale is achieved through the deployment of 176 Siemens Gamesa SG 14-222 DD fixed-bottom wind turbines. Each turbine is rated at 14.6 megawatts (MW) and features a 222-metre (728 ft) rotor diameter, utilizing advanced technology to maximize energy capture in the specific wind regimes of the Hampton Roads metropolitan area. The project covers a lease area of 112,800 acres (456 km2), located approximately 24 nautical miles off the coast of Virginia Beach.

Strategic Role in Virginia’s Energy Portfolio

The development of CVOW is central to Virginia’s broader clean energy strategy, providing a substantial baseload of renewable power to the state’s growing electricity demand. The project is expected to generate electricity equivalent to the power consumed by 660,000 homes, offering a significant hedge against fossil fuel price volatility and contributing to state-level emissions reduction targets. By situating the farm in the Chesapeake Bay region, the project leverages the strong and consistent wind resources of the Mid-Atlantic coast, enhancing grid reliability during peak demand periods. The integration of such a large capacity into the Dominion Energy grid underscores the transition toward diversified energy mixes in the southeastern United States.

State Utility-Led Development Model

A distinctive feature of CVOW is its status as a state utility-led project, developed directly by Dominion Energy. This model contrasts with many other offshore wind initiatives that rely on independent power producers (IPPs) or complex public-private partnerships. Dominion Energy’s direct involvement allows for streamlined integration with existing transmission infrastructure and coordinated planning with state regulators. The company expects the total project cost to reach $10.7 billion, reflecting the capital intensity of large-scale offshore wind development. This utility-led approach provides a template for other states considering offshore wind, demonstrating how established regional utilities can drive rapid deployment through direct investment and operational control. The project’s commissioning in 2026 marks a key milestone in validating this development model in the U.S. market.

History and regulatory process

The development of the Coastal Virginia Offshore Wind (CVOW) project began with a significant federal leasing event in 2012. During this period, the Bureau of Ocean Energy Management (BOEM) conducted a lease auction that awarded the rights to the site to Dominion Energy. This initial step secured the area located approximately 24 nautical miles off the coast of Virginia Beach within the Hampton Roads metropolitan area. The lease covers a substantial area of 112,800 acres (456 km2), establishing the foundation for what is now the largest offshore wind project under development in the U.S..

Regulatory Milestones and Environmental Review

Following the 2012 lease award, the project entered a prolonged regulatory and environmental review process. A critical phase involved the preparation and analysis of the Environmental Impact Statement (EIS). This document evaluated various alternatives for the wind farm's layout and operation to determine the most suitable configuration for the marine environment and local infrastructure. The review process considered the installation of 176 Siemens Gamesa SG 14-222 DD fixed-bottom wind turbines. Each turbine is designed with a capacity of 14.6 megawatts (MW) and a rotor diameter of 222 metres (728 ft), contributing to the total expected capacity of 2.6 gigawatts (GW).

The regulatory timeline culminated in a major decision in 2023. In that year, the Record of Decision was issued, formally advancing the project toward construction. This decision followed extensive BOEM approvals and stakeholder consultations. The project is expected to cost $10.7 billion and is scheduled to be commissioned in 2026. Upon completion, the wind farm is projected to generate electricity equivalent to the power consumed by 660,000 homes. The path from the 2012 auction to the 2023 Record of Decision reflects the complex interplay of federal leasing, environmental assessment, and infrastructure planning required for large-scale offshore energy development in the U.S. Atlantic coast.

How does the offshore wind farm infrastructure work?

Turbine Specifications

The project utilizes 176 fixed-bottom wind turbines manufactured by Siemens Gamesa, specifically the SG 14-222 DD model. Each turbine has a rated capacity of 14.6 MW and features a rotor diameter of 222 metres (728 ft). These units are selected for their efficiency in the specific wind resource characteristics of the Hampton Roads area, located approximately 24 nautical miles off the coast of Virginia Beach.

Foundations and Substations

The turbines are mounted on fixed-bottom foundations, typical for shallow-water offshore wind farms in the region. While specific foundation dimensions are not detailed in the primary source, the fixed-bottom configuration implies the use of monopiles or jacket structures driven into the seabed to support the heavy nacelle and rotor assembly. The electrical output from the turbines is collected and stepped up at offshore substations before transmission to the onshore grid.

Technical Specifications

Parameter Value
Turbine Model Siemens Gamesa SG 14-222 DD
Number of Turbines 176
Capacity per Turbine 14.6 MW
Total Installed Capacity 2.6 GW
Rotor Diameter 222 metres (728 ft)
Foundation Type Fixed-bottom
Lease Area 112,800 acres (456 km2)
Estimated Project Cost $10.7 billion
Expected Homes Powered 660,000

Cable Systems

The infrastructure includes a network of subsea cables connecting the individual turbines to the offshore substations and then to the onshore interconnection point. The specific cable lengths and voltage levels are not explicitly detailed in the provided source, but the system is designed to transmit the aggregated 2.6 GW output efficiently to the Dominion Energy grid. The project is expected to be commissioned in 2026, marking a significant addition to the U.S. offshore wind capacity.

What are the environmental and cultural impacts?

The Coastal Virginia Offshore Wind (CVOW) project, spanning 112,800 acres (456 km2) in the Atlantic Ocean, has undergone extensive environmental and cultural resource assessments to mitigate impacts on the local ecosystem and human heritage. The project’s location, approximately 24 nautical miles off the coast of Virginia Beach, places it within a dynamic marine environment supporting diverse biological and cultural resources.

Marine Mammals and Fisheries

Marine mammals, including whales, dolphins, and seals, are among the primary biological concerns for CVOW. The construction phase, involving the installation of 176 Siemens Gamesa SG 14-222 DD fixed-bottom turbines, generates underwater noise and habitat disturbance that can affect marine mammal behavior and migration patterns. Dominion Energy has implemented mitigation strategies such as seasonal construction windows and bubble curtains to reduce acoustic impact. Additionally, the project area overlaps with existing commercial and recreational fisheries. To minimize disruption, the development plan includes coordination with local fishers, designated exclusion zones during peak fishing seasons, and compensation mechanisms for displaced fishing grounds.

Wetlands and Coastal Ecosystems

The CVOW project’s transmission infrastructure, including the subsea cable route and onshore landing point, intersects with coastal wetlands and estuarine ecosystems. These habitats are critical for bird migration, fish spawning, and coastal resilience. Environmental impact assessments have identified potential effects on wetland hydrology and vegetation. Mitigation measures include careful routing of the subsea cable to avoid sensitive wetland areas, restoration of disturbed habitats, and ongoing monitoring of water quality and sediment dynamics. The project also incorporates design features to reduce visual and auditory impacts on coastal communities and wildlife.

Cultural Resources

The CVOW lease area contains significant cultural resources, including archaeological sites, shipwrecks, and historic fishing grounds. These resources reflect the region’s maritime heritage and Indigenous history. Dominion Energy has conducted extensive archaeological surveys and consultations with local tribes, historians, and cultural resource experts to identify and protect these sites. Mitigation strategies include avoiding direct impacts on key archaeological zones, documenting and preserving cultural artifacts, and establishing a cultural resource management plan to guide construction and operation phases.

Overall, the environmental and cultural impact assessments for CVOW demonstrate a comprehensive approach to balancing renewable energy development with ecosystem preservation and cultural heritage protection. The project’s mitigation strategies aim to minimize adverse effects while maximizing benefits for the Hampton Roads region and the broader Atlantic coast.

Finance and economic benefits

The Coastal Virginia Offshore Wind (CVOW) project represents a significant capital investment in the United States energy infrastructure, with Dominion Energy estimating the total project cost at $10.7 billion. This financial commitment underpins the development of the 2,600 MW facility, positioning it as the largest offshore wind project currently under development in the nation. The scale of the investment reflects the complexity of deploying 176 fixed-bottom turbines in the Atlantic Ocean, approximately 24 nautical miles off the coast of Virginia Beach.

Investment Structure

Dominion Energy serves as the primary developer and operator of the CVOW project. While the total cost is attributed to the operator, the financial architecture of such large-scale renewable energy assets often involves strategic equity and debt partnerships to mitigate risk and accelerate construction timelines. The $10.7 billion valuation encompasses the procurement of Siemens Gamesa SG 14-222 DD wind turbines, each with a capacity of 14.6 MW, as well as the extensive offshore substation and transmission cable infrastructure required to deliver power to the Hampton Roads metropolitan area.

Economic Impact and Job Creation

The economic benefits of CVOW extend beyond electricity generation, contributing substantially to the regional economy of Virginia. The project is projected to generate revenue and stimulate job creation across various sectors, including manufacturing, logistics, and marine operations. As the wind farm is expected to produce electricity equivalent to the power consumed by 660,000 homes, the operational phase will sustain long-term employment opportunities in maintenance and grid management. The development phase, covering a lease area of 112,800 acres, has already initiated economic activity in the Hampton Roads region, supporting local supply chains and port facilities essential for turbine transport and installation.

Coastal Virginia Offshore Wind is scheduled for commissioning in 2026, marking a significant milestone for the U.S. offshore wind sector. The project, developed by Dominion Energy, is positioned as the largest offshore wind project under development in the United States. Upon completion, the facility will cover a lease area of 112,800 acres (456 km2) and deliver a total capacity of 2.6 gigawatts (GW). This output is expected to generate electricity equivalent to the power consumed by 660,000 homes, substantially contributing to the energy mix of the Hampton Roads metropolitan area and the broader Virginia grid. The wind farm will consist of 176 Siemens Gamesa SG 14-222 DD fixed-bottom wind turbines. Each turbine has a capacity of 14.6 megawatts (MW) and features a 222-metre (728 ft) rotor diameter. Dominion Energy estimates the total project cost at $10.7 billion.

Expansion Plans: CVOW-South and CVOW-East

Following the initial phase, Dominion Energy has outlined expansion strategies to increase the total installed capacity in the region. These plans include the development of CVOW-South and CVOW-East, which aim to build upon the infrastructure and lease areas established by the primary project. The expansions are designed to leverage the existing grid connections and port facilities in Virginia Beach, optimizing the logistical chain for future turbine installations and maintenance operations. While the initial 2.6 GW phase focuses on the core lease area, the subsequent phases seek to extend the wind farm’s footprint along the Virginia coast, further integrating wind energy into the state’s long-term renewable energy portfolio.

Political and Regulatory Landscape

The development of Coastal Virginia Offshore Wind has navigated a complex political and regulatory environment. As one of the flagship renewable energy initiatives in the U.S., the project has faced scrutiny regarding its timeline, cost projections, and environmental impact. Political challenges have included debates over lease pricing, interconnection queue management, and the allocation of state subsidies. Despite these hurdles, the project maintains strong support from state and local governments in Virginia, which view the wind farm as a critical component of the region’s energy independence and climate goals. The successful commissioning in 2026 is seen as a validation of the state’s offshore wind strategy, potentially paving the way for accelerated approvals for CVOW-South and CVOW-East.

See also